Durgā Navamī

1. १Step 1, Aṅga

   Navamī runs from 07:06 on Fri 30 Oct to 05:01 on Sat 31 Oct.

   1987-10-30T04:06:26Z → 1987-10-31T02:00:47Z
2. २Step 2, Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 10:53–11:41 on the 30th, 10:53–11:41 on the 31st.

   madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
3. ३Step 3, Rule

   Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 30th and 0 of 48 on the 31st.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104
4. ४Step 4, Tie-break

   Only one midday qualifies. No tie-break is needed.

   one day qualifies → only-day · margin 13620 s
5. ५Step 5, Ruling

   Durgā Navamī, Doha, 1987: Friday 30 October.

   confidence: determinate

In Doha, Durgā Navamī 1987 falls on Friday 30 October. Navamī runs from 07:06 on Fri 30 Oct to 05:01 on Sat 31 Oct and covers all of madhyāhna that midday.

Institutional rulings are recorded with a source address, and are never edited to agree.

Month

Kārtika, amānta

Pakṣa · aṅga

Śukla · Navamī

Kāla

Madhyāhna

Priority

Pūrvaviddhā

Tie-break

First day

Reference

CRC 1955, p. 104

S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata. Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.